505702369 has 2 divisors, whose sum is σ = 505702370. Its totient is φ = 505702368.

The previous prime is 505702367. The next prime is 505702381. The reversal of 505702369 is 963207505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372991969 + 132710400 = 19313^2 + 11520^2 .

It is a cyclic number.

It is not a de Polignac number, because 505702369 - 2¹ = 505702367 is a prime.

It is a super-2 number, since 2×505702369² = 511469772024424322, which contains 22 as substring.

Together with 505702367, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (505702367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252851184 + 252851185.

It is an arithmetic number, because the mean of its divisors is an integer number (252851185).

Almost surely, 2^505702369 is an apocalyptic number.

It is an amenable number.

505702369 is a deficient number, since it is larger than the sum of its proper divisors (1).

505702369 is an equidigital number, since it uses as much as digits as its factorization.

505702369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 505702369 is about 22487.8271293605. The cubic root of 505702369 is about 796.7064430653.

The spelling of 505702369 in words is "five hundred five million, seven hundred two thousand, three hundred sixty-nine".